Hydromet, let us know what browser you're using.
Please also let us know the name of the advertiser (if you can see it).
Finally, please mouse over the ad, right click to save the link, and paste the whole code here. If it's a Flash ad (and thus has no right-clickable link), let us know that also and capture and paste a screenshot if possible.
These details will help us track down the ad. Thanks!